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Standard library header <ostream>

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C++
Standard library headers

Dieser Header ist Teil der Input/output -Bibliothek.

Inhaltsverzeichnis

Klassen

umschließt ein gegebenes abstraktes Gerät ( std::basic_streambuf )
und bietet eine hochwertige Ausgabeschnittstelle
(Klassentemplate)
std::ostream std:: basic_ostream < char >
(Typdefinition)
std::wostream std:: basic_ostream < wchar_t >
(Typdefinition)

Funktionen

fügt Zeichendaten ein oder fügt in Rvalue-Stream ein
(Funktionstemplate)
(C++23)
gibt formatierte Darstellung der Argumente aus
(Funktionstemplate)
(C++23)
gibt formatierte Darstellung der Argumente mit angehängtem ' \n ' aus
(Funktionstemplate)
(C++23)
führt Unicode-fähige Ausgabe unter Verwendung von typeradierten Argumentdarstellungen durch
(Funktion)
(C++23)
gibt Zeichendaten unter Verwendung von typeradierten Argumentdarstellungen aus
(Funktion)
Manipulatoren
gibt ' \n ' aus und leert den Ausgabestream
(Funktionstemplate)
gibt ' \0 ' aus
(Funktionstemplate)
leert den Ausgabestream
(Funktionstemplate)
(C++20)
steuert, ob ein basic_syncbuf eines Streams beim Leeren emittiert
(Funktionstemplate)
(C++20)
leert einen Stream und emittiert den Inhalt, falls ein basic_syncbuf verwendet wird
(Funktionstemplate)

Übersicht 

namespace std {
  template<class CharT, class Traits = char_traits<CharT>>
    class basic_ostream;
  using ostream  = basic_ostream<char>;
  using wostream = basic_ostream<wchar_t>;
  template<class CharT, class Traits>
    basic_ostream<CharT, Traits>& endl(basic_ostream<CharT, Traits>& os);
  template<class CharT, class Traits>
    basic_ostream<CharT, Traits>& ends(basic_ostream<CharT, Traits>& os);
  template<class CharT, class Traits>
    basic_ostream<CharT, Traits>& flush(basic_ostream<CharT, Traits>& os);
  template<class CharT, class Traits>
    basic_ostream<CharT, Traits>& emit_on_flush(basic_ostream<CharT, Traits>& os);
  template<class CharT, class Traits>
    basic_ostream<CharT, Traits>& noemit_on_flush(basic_ostream<CharT, Traits>& os);
  template<class CharT, class Traits>
    basic_ostream<CharT, Traits>& flush_emit(basic_ostream<CharT, Traits>& os);
  template<class Ostream, class T>
    Ostream&& operator<<(Ostream&& os, const T& x);
  // Druckfunktionen
  template<class... Args>
    void print(ostream& os, format_string<Args...> fmt, Args&&... args);
  template<class... Args>
    void println(ostream& os, format_string<Args...> fmt, Args&&... args);
  void println(ostream& os);
  void vprint_unicode(ostream& os, string_view fmt, format_args args);
  void vprint_nonunicode(ostream& os, string_view fmt, format_args args);
}

Klassentemplate std::basic_ostream 

namespace std {
  template<class CharT, class Traits = char_traits<CharT>>
  class basic_ostream : virtual public basic_ios<CharT, Traits> {
  public:
    // Typen (geerbt von basic_ios)
    using char_type   = CharT;
    using int_type    = typename Traits::int_type;
    using pos_type    = typename Traits::pos_type;
    using off_type    = typename Traits::off_type;
    using traits_type = Traits;
    // Konstruktor/Destruktor
    explicit basic_ostream(basic_streambuf<char_type, Traits>* sb);
    virtual ~basic_ostream();
    // Präfix/Suffix
    class sentry;
    // formatierte Ausgabe
    basic_ostream& operator<<(basic_ostream& (*pf)(basic_ostream&));
    basic_ostream& operator<<(basic_ios<CharT, Traits>& (*pf)(basic_ios<CharT, Traits>&));
    basic_ostream& operator<<(ios_base& (*pf)(ios_base&));
    basic_ostream& operator<<(bool n);
    basic_ostream& operator<<(short n);
    basic_ostream& operator<<(unsigned short n);
    basic_ostream& operator<<(int n);
    basic_ostream& operator<<(unsigned int n);
    basic_ostream& operator<<(long n);
    basic_ostream& operator<<(unsigned long n);
    basic_ostream& operator<<(long long n);
    basic_ostream& operator<<(unsigned long long n);
    basic_ostream& operator<<(float f);
    basic_ostream& operator<<(double f);
    basic_ostream& operator<<(long double f);
    basic_ostream& operator<<(/*erweiterter Gleitkommatyp*/ f);
    basic_ostream& operator<<(const void* p);
    basic_ostream& operator<<(const volatile void* p);
    basic_ostream& operator<<(nullptr_t);
    basic_ostream& operator<<(basic_streambuf<char_type, Traits>* sb);
    // unformatierte Ausgabe
    basic_ostream& put(char_type c);
    basic_ostream& write(const char_type* s, streamsize n);
    basic_ostream& flush();
    // sucht
    pos_type tellp();
    basic_ostream& seekp(pos_type);
    basic_ostream& seekp(off_type, ios_base::seekdir);
  protected:
    // Kopier-/Move-Konstruktor
    basic_ostream(const basic_ostream&) = delete;
    basic_ostream(basic_ostream&& rhs);
    // Zuweisung und Austausch
    basic_ostream& operator=(const basic_ostream&) = delete;
    basic_ostream& operator=(basic_ostream&& rhs);
    void swap(basic_ostream& rhs);
  };
  // Zeichen-Einfügefunktionen
  template<class CharT, class Traits>
    basic_ostream<CharT, Traits>& operator<<(basic_ostream<CharT, Traits>&, CharT);
  template<class CharT, class Traits>
    basic_ostream<CharT, Traits>& operator<<(basic_ostream<CharT, Traits>&, char);
  template<class Traits>
    basic_ostream<char, Traits>& operator<<(basic_ostream<char, Traits>&, char);
  template<class Traits>
    basic_ostream<char, Traits>& operator<<(basic_ostream<char, Traits>&, signed char);
  template<class Traits>
    basic_ostream<char, Traits>& operator<<(basic_ostream<char, Traits>&, unsigned char);
  template<class Traits>
    basic_ostream<char, Traits>& operator<<(basic_ostream<char, Traits>&,
                                            wchar_t) = delete;
  template<class Traits>
    basic_ostream<char, Traits>& operator<<(basic_ostream<char, Traits>&,
                                            char8_t) = delete;
  template<class Traits>
    basic_ostream<char, Traits>& operator<<(basic_ostream<char, Traits>&,
                                            char16_t) = delete;
  template<class Traits>
    basic_ostream<char, Traits>& operator<<(basic_ostream<char, Traits>&,
                                            char32_t) = delete;
  template<class Traits>
    basic_ostream<wchar_t, Traits>&
      operator<<(basic_ostream<wchar_t, Traits>&, char8_t) = delete;
  template<class Traits>
    basic_ostream<wchar_t, Traits>&
      operator<<(basic_ostream<wchar_t, Traits>&, char16_t) = delete;
  template<class Traits>
    basic_ostream<wchar_t, Traits>&
      operator<<(basic_ostream<wchar_t, Traits>&, char32_t) = delete;
  template<class CharT, class Traits>
    basic_ostream<CharT, Traits>& operator<<(basic_ostream<CharT, Traits>&, const CharT*);
  template<class CharT, class Traits>
    basic_ostream<CharT, Traits>& operator<<(basic_ostream<CharT, Traits>&, const char*);
  template<class Traits>
    basic_ostream<char, Traits>& operator<<(basic_ostream<char, Traits>&, const char*);
  template<class Traits>
    basic_ostream<char, Traits>& operator<<(basic_ostream<char, Traits>&,
                                            const signed char*);
  template<class Traits>
    basic_ostream<char, Traits>& operator<<(basic_ostream<char, Traits>&,
                                            const unsigned char*);
  template<class Traits>
    basic_ostream<char, Traits>&
      operator<<(basic_ostream<char, Traits>&, const wchar_t*) = delete;
  template<class Traits>
    basic_ostream<char, Traits>&
      operator<<(basic_ostream<char, Traits>&, const char8_t*) = delete;
  template<class Traits>
    basic_ostream<char, Traits>&
      operator<<(basic_ostream<char, Traits>&, const char16_t*) = delete;
  template<class Traits>
    basic_ostream<char, Traits>&
      operator<<(basic_ostream<char, Traits>&, const char32_t*) = delete;
  template<class Traits>
    basic_ostream<wchar_t, Traits>&
      operator<<(basic_ostream<wchar_t, Traits>&, const char8_t*) = delete;
  template<class Traits>
    basic_ostream<wchar_t, Traits>&
      operator<<(basic_ostream<wchar_t, Traits>&, const char16_t*) = delete;
  template<class Traits>
    basic_ostream<wchar_t, Traits>&
      operator<<(basic_ostream<wchar_t, Traits>&, const char32_t*) = delete;
}

Klasse std::basic_ostream::sentry 

namespace std {
  template<class CharT, class Traits>
  class basic_ostream<CharT, Traits>::sentry {
    bool ok_;       // nur zur Darstellung
  public:
    explicit sentry(basic_ostream& os);
    ~sentry();
    explicit operator bool() const { return ok_; }
    sentry(const sentry&) = delete;
    sentry& operator=(const sentry&) = delete;
  };
}